Electrochemical Performance of Biomass-Derived AC and CNTs-Based Supercapacitors

Meiram K. Atamanov, Tolganay Atamanova, Azamat Taurbekov, Zulkhair Aimukhametovich Mansurov

2024

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DOI 10.4018/979-8-3693-7505-1.ch009
Data confidence 70 medium
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Abstract

This study investigates the electrochemical performance of activated carbon (AC) derived from two biomass sources, rice husk (RH) and walnut shell (WS), utilizing two activation methods: chemical activation with potassium hydroxide (KOH) and physical activation with carbon dioxide (CO2). The aim is to evaluate the potential of these bio-derived carbon materials in energy storage applications, particularly for supercapacitors. The electrochemical behavior of the activated carbon electrodes was assessed using cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) techniques, along with electrochemical impedance spectroscopy (EIS), to evaluate the specific capacitance, energy density, charge transfer resistance, and ion diffusion properties.